Paddle Shifter - (Downshift Switch) Circuit Troubleshooting

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repair or service.

1. Remove the steering wheel (see STEERING WHEEL REMOVAL ).
2. Check for continuity between cable reel subharness 20P connector terminals No. 12 and No. 15 when pressing and releasing the paddle shifter - (downshift switch).
   Fig 1: Checking Continuity Between Cable Reel Subharness 20P Connector Terminals 12 And 15

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity when pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - (downshift switch) is released? 

   YES  -Go to step  5.

   NO  -Go to step 3.

3. Disconnect the paddle shifter - (downshift switch) connector.
4. Check for continuity between paddle shifter - (downshift switch) connector terminals No. 1 and No. 2 when pressing and releasing the paddle shifter - (downshift switch).
   Fig 2: Checking Continuity Between Paddle Shifter - (Downshift Switch) Connector Terminals 1 And 2

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity when pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - (downshift switch) is released? 

   YES  -Replace the cable reel subharness or repair poor connection at terminal G551.

   NO  -Replace the paddle shifter - (downshift switch) (see PADDLE SHIFTER + (UPSHIFT SWITCH) OR PADDLE SHIFTER - (DOWNSHIFT SWITCH) REPLACEMENT ).

5. Remove the cable reel (see CABLE REEL REPLACEMENT ).
6. Check for continuity between dashboard wire harness 20P connector terminal No. 2 and body ground.
   Fig 3: Checking Continuity Between Dashboard Wire Harness 20P Connector Terminal 2 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  -Go to step 7.

   NO  -Repair an open in the wire between dashboard wire harness 20P connector terminal No. 2 and body ground (G502), or repair poor body ground; (G502).

7. Check for continuity between dashboard wire harness 20P connector terminal No. 15 and body ground.
   Fig 4: Checking Continuity Between Dashboard Wire Harness 20P Connector Terminal 15 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  -Go to step 8.

   NO  -Repair an open in the wire between PCM connector terminal A48 and the dashboard wire harness 20P connector.

8. Turn the ignition switch to ON (II), and shift to S.
9. Measure the voltage between dashboard wire harness 20P connector terminals No. 2 and No. 15.
   Fig 5: Measuring Voltage Between Dashboard Wire Harness 20P Connector Terminals 2 And 15

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there battery voltage? 

   YES  -Replace the cable reel (see CABLE REEL REPLACEMENT ).

   NO  -Go to step 10.

10. Turn the ignition switch to LOCK (0).
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector A (49P).
13. Check for continuity between PCM connector terminal A48 and body ground.
    Fig 6: Checking Continuity Between PCM Connector Terminal A48 And Body Ground

    Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short to body ground in the wire between dashboard wire harness 20P connector terminal No. 15 and PCM connector terminal A48.

    NO  -Check for loose or poor connections at PCM connector terminal A48. If the connection is OK, substitute a known-good PCM (see SUBSTITUTING THE PCM ) and recheck.